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perf symbols: Encapsulate dsos list head into struct dsos 

This is a precursor patch to enable long name searching of DSOs using
a rbtree.

In this patch, a new dsos structure is created which contains only a
list head structure for the moment.

The new dsos structure is used, in turn, in the machine structure for
the user_dsos and kernel_dsos fields.

Only the following 3 dsos functions are modified to accept the new dsos
structure parameter instead of list_head:

 - dsos__add()
 - dsos__find()
 - __dsos__findnew()

Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Douglas Hatch <doug.hatch@hp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Scott J Norton <scott.norton@hp.com>
Link: http://lkml.kernel.org/r/1412021249-19201-2-git-send-email-Waiman.Long@hp.com
[ Move struct dsos to dso.h to reduce the dso methods depends on machine.h ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Waiman Long 2014-09-29 16:07:28 -04:00 committed by Arnaldo Carvalho de Melo
parent e19685ed24
commit 8fa7d87f91
7 changed files with 60 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
tools/perf/util/dso.c
View File

@ -851,35 +851,36 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits)
return have_build_id;
}
void dsos__add(struct list_head *head, struct dso *dso)
void dsos__add(struct dsos *dsos, struct dso *dso)
{
list_add_tail(&dso->node, head);
list_add_tail(&dso->node, &dsos->head);
}
struct dso *dsos__find(const struct list_head *head, const char *name, bool cmp_short)
struct dso *dsos__find(const struct dsos *dsos, const char *name,
bool cmp_short)
{
struct dso *pos;
if (cmp_short) {
list_for_each_entry(pos, head, node)
list_for_each_entry(pos, &dsos->head, node)
if (strcmp(pos->short_name, name) == 0)
return pos;
return NULL;
}
list_for_each_entry(pos, head, node)
list_for_each_entry(pos, &dsos->head, node)
if (strcmp(pos->long_name, name) == 0)
return pos;
return NULL;
}
struct dso *__dsos__findnew(struct list_head *head, const char *name)
struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
{
struct dso *dso = dsos__find(head, name, false);
struct dso *dso = dsos__find(dsos, name, false);
if (!dso) {
dso = dso__new(name);
if (dso != NULL) {
dsos__add(head, dso);
dsos__add(dsos, dso);
dso__set_basename(dso);
}
}

13
tools/perf/util/dso.h
View File

@ -90,6 +90,13 @@ struct dso_cache {
char data[0];
};
/*
* DSOs are put into a list for fast iteration.
*/
struct dsos {
struct list_head head;
};
struct dso {
struct list_head node;
struct rb_root symbols[MAP__NR_TYPES];
@ -224,10 +231,10 @@ struct map *dso__new_map(const char *name);
struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
const char *short_name, int dso_type);
void dsos__add(struct list_head *head, struct dso *dso);
struct dso *dsos__find(const struct list_head *head, const char *name,
void dsos__add(struct dsos *dsos, struct dso *dso);
struct dso *dsos__find(const struct dsos *dsos, const char *name,
bool cmp_short);
struct dso *__dsos__findnew(struct list_head *head, const char *name);
struct dso *__dsos__findnew(struct dsos *dsos, const char *name);
bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,

32
tools/perf/util/header.c
View File

@ -214,11 +214,11 @@ static int machine__hit_all_dsos(struct machine *machine)
{
int err;
err = __dsos__hit_all(&machine->kernel_dsos);
err = __dsos__hit_all(&machine->kernel_dsos.head);
if (err)
return err;
return __dsos__hit_all(&machine->user_dsos);
return __dsos__hit_all(&machine->user_dsos.head);
}
int dsos__hit_all(struct perf_session *session)
@ -288,11 +288,12 @@ static int machine__write_buildid_table(struct machine *machine, int fd)
umisc = PERF_RECORD_MISC_GUEST_USER;
}
err = __dsos__write_buildid_table(&machine->kernel_dsos, machine,
err = __dsos__write_buildid_table(&machine->kernel_dsos.head, machine,
machine->pid, kmisc, fd);
if (err == 0)
err = __dsos__write_buildid_table(&machine->user_dsos, machine,
machine->pid, umisc, fd);
err = __dsos__write_buildid_table(&machine->user_dsos.head,
machine, machine->pid, umisc,
fd);
return err;
}
@ -455,9 +456,10 @@ static int __dsos__cache_build_ids(struct list_head *head,
static int machine__cache_build_ids(struct machine *machine, const char *debugdir)
{
int ret = __dsos__cache_build_ids(&machine->kernel_dsos, machine,
int ret = __dsos__cache_build_ids(&machine->kernel_dsos.head, machine,
debugdir);
ret |= __dsos__cache_build_ids(&machine->user_dsos, machine, debugdir);
ret |= __dsos__cache_build_ids(&machine->user_dsos.head, machine,
debugdir);
return ret;
}
@ -483,8 +485,10 @@ static int perf_session__cache_build_ids(struct perf_session *session)
static bool machine__read_build_ids(struct machine *machine, bool with_hits)
{
bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits);
ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits);
bool ret;
ret = __dsos__read_build_ids(&machine->kernel_dsos.head, with_hits);
ret |= __dsos__read_build_ids(&machine->user_dsos.head, with_hits);
return ret;
}
@ -1548,7 +1552,7 @@ static int __event_process_build_id(struct build_id_event *bev,
struct perf_session *session)
{
int err = -1;
struct list_head *head;
struct dsos *dsos;
struct machine *machine;
u16 misc;
struct dso *dso;
@ -1563,22 +1567,22 @@ static int __event_process_build_id(struct build_id_event *bev,
switch (misc) {
case PERF_RECORD_MISC_KERNEL:
dso_type = DSO_TYPE_KERNEL;
head = &machine->kernel_dsos;
dsos = &machine->kernel_dsos;
break;
case PERF_RECORD_MISC_GUEST_KERNEL:
dso_type = DSO_TYPE_GUEST_KERNEL;
head = &machine->kernel_dsos;
dsos = &machine->kernel_dsos;
break;
case PERF_RECORD_MISC_USER:
case PERF_RECORD_MISC_GUEST_USER:
dso_type = DSO_TYPE_USER;
head = &machine->user_dsos;
dsos = &machine->user_dsos;
break;
default:
goto out;
}
dso = __dsos__findnew(head, filename);
dso = __dsos__findnew(dsos, filename);
if (dso != NULL) {
char sbuild_id[BUILD_ID_SIZE * 2 + 1];

24
tools/perf/util/machine.c
View File

@ -17,8 +17,8 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
{
map_groups__init(&machine->kmaps);
RB_CLEAR_NODE(&machine->rb_node);
INIT_LIST_HEAD(&machine->user_dsos);
INIT_LIST_HEAD(&machine->kernel_dsos);
INIT_LIST_HEAD(&machine->user_dsos.head);
INIT_LIST_HEAD(&machine->kernel_dsos.head);
machine->threads = RB_ROOT;
INIT_LIST_HEAD(&machine->dead_threads);
@ -72,11 +72,11 @@ out_delete:
return NULL;
}
static void dsos__delete(struct list_head *dsos)
static void dsos__delete(struct dsos *dsos)
{
struct dso *pos, *n;
list_for_each_entry_safe(pos, n, dsos, node) {
list_for_each_entry_safe(pos, n, &dsos->head, node) {
list_del(&pos->node);
dso__delete(pos);
}
@ -477,23 +477,23 @@ struct map *machine__new_module(struct machine *machine, u64 start,
size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
{
struct rb_node *nd;
size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) +
__dsos__fprintf(&machines->host.user_dsos, fp);
size_t ret = __dsos__fprintf(&machines->host.kernel_dsos.head, fp) +
__dsos__fprintf(&machines->host.user_dsos.head, fp);
for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
struct machine *pos = rb_entry(nd, struct machine, rb_node);
ret += __dsos__fprintf(&pos->kernel_dsos, fp);
ret += __dsos__fprintf(&pos->user_dsos, fp);
ret += __dsos__fprintf(&pos->kernel_dsos.head, fp);
ret += __dsos__fprintf(&pos->user_dsos.head, fp);
}
return ret;
}
size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm)
{
return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, skip, parm) +
__dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm);
return __dsos__fprintf_buildid(&m->kernel_dsos.head, fp, skip, parm) +
__dsos__fprintf_buildid(&m->user_dsos.head, fp, skip, parm);
}
size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
@ -994,7 +994,7 @@ static bool machine__uses_kcore(struct machine *machine)
{
struct dso *dso;
list_for_each_entry(dso, &machine->kernel_dsos, node) {
list_for_each_entry(dso, &machine->kernel_dsos.head, node) {
if (dso__is_kcore(dso))
return true;
}

5
tools/perf/util/machine.h
View File

@ -4,6 +4,7 @@
#include <sys/types.h>
#include <linux/rbtree.h>
#include "map.h"
#include "dso.h"
#include "event.h"
struct addr_location;
@ -32,8 +33,8 @@ struct machine {
struct list_head dead_threads;
struct thread *last_match;
struct vdso_info *vdso_info;
struct list_head user_dsos;
struct list_head kernel_dsos;
struct dsos user_dsos;
struct dsos kernel_dsos;
struct map_groups kmaps;
struct map *vmlinux_maps[MAP__NR_TYPES];
u64 kernel_start;

3
tools/perf/util/probe-event.c
View File

@ -184,7 +184,8 @@ static struct dso *kernel_get_module_dso(const char *module)
const char *vmlinux_name;
if (module) {
list_for_each_entry(dso, &host_machine->kernel_dsos, node) {
list_for_each_entry(dso, &host_machine->kernel_dsos.head,
node) {
if (strncmp(dso->short_name + 1, module,
dso->short_name_len - 2) == 0)
goto found;

7
tools/perf/util/symbol-elf.c
View File

@ -6,6 +6,7 @@
#include <inttypes.h>
#include "symbol.h"
#include "machine.h"
#include "vdso.h"
#include <symbol/kallsyms.h>
#include "debug.h"
@ -929,7 +930,11 @@ int dso__load_sym(struct dso *dso, struct map *map,
}
curr_dso->symtab_type = dso->symtab_type;
map_groups__insert(kmap->kmaps, curr_map);
dsos__add(&dso->node, curr_dso);
/*
* The new DSO should go to the kernel DSOS
*/
dsos__add(&map->groups->machine->kernel_dsos,
curr_dso);
dso__set_loaded(curr_dso, map->type);
} else
curr_dso = curr_map->dso;